"My Add Integration" Button leads to a 404 Not Found from NEST setup

When accessing the my integration button on this page

although the correct URL appears on in the browser, when clicking on “open link” it goes to a 404 page




I have the exact same issue. Home Assistant 2023.8.4

I saw something like this. I think the problem is it can not resolve homeassistant.local to the IP address on your HA instance. To fix it I put homeassistant.local in the hosts file on the computer running the browser and that solved it for me.

I’m using a valid FQDN, both the nabu casa one and my custom one that I have set up with a reverse proxy and neither works. When were you able to use that button successfully? I wonder if it broke in a release this year or something.